Endress+Hauser RIA45 Brief Operating Instructions page 32

Wiring
Overview of possible connection options at the device
Terminal assignment of analog inputs, channel 1 and 2 (optional)
Connection of the loop power supply
2-wire
Connection of the analog input
RTD/Resistance 2-wire
Thermocouple
Current
32
4-wire
a0010407
RTD/Resistance 3-wire
a0010581
U ≤ 1 V
a0010409
a0011934
a0010408
RTD/Resistance 4-wire
a0010582
U > 1 V
a0010410
RIA45
a0010406
a0010583
a0010411
Endress+Hauser